Question: when was Moscow has twinned administrative body as Banja Luka ?
Paraphrase: On what date was Banja Luka a twinned administrative body with Moscow?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q649 p:P190 ?s . ?s ps:P190 wd:Q131127 . ?s pq:P580 ?value}